The door, although also covered by a Magical Energy Array, because of its simple and thin structure, makes it difficult to depict deep techniques in the array, such as Solid Magic Pattern, overlapping magic patterns, and so on. So, the extension on the door is particularly susceptible to damage within the array.
Just look at these two buildings.
The doors of these two buildings have all been destroyed. Even though the doors were attached with Magical Energy Arrays, when impacted by a large number of Ghosteye Witches, the doors were still damaged as expected.
Therefore, when Angel saw a door still perfectly intact, he was quite surprised.
Why is this particular door still intact?
With doubt in his mind, Angel walked to the door, quickly constructing the "Server" of the Eye of Nalda in his Mind Space, using the accumulated knowledge within the "Server" to rapidly identify various information about the door.
The material of the door, its size and dimensions, the traces left on the door... various pieces of information processed in the "Server" gave Angel straightforward answers.
Indeed, this door is inherently different from other doors.
Its material is exceptionally high-grade stone, even surpassing the material of the building itself, allowing the door to bear more magic patterns than other doors.
Among them, Angel found at least a hundred Magic Tattoo Horn patterns related to "reinforcement". Other doors might only have a few similar patterns like "tenacity" and "sturdiness".
This is the reason this door remains intact to this day, because it is so tough.
Unfortunately, aside from the reinforcement patterns that are still operational due to their excellent compatibility with the stone, most other magic patterns have been destroyed, explaining why the door can be opened.
However, by looking at the damaged magic patterns, one can glimpse how secure it was here in the past.
If not for the ravages of time and the continuous impact of too many Ghosteye Witches, this door surely would be an impenetrable barrier, strictly guarding the access to the two buildings.
Such meticulous protection increases Angel’s curiosity; what originally occupied the fifth and sixth floors of the building opposite?
Passing through the door, Angel walked into a secluded corridor bridge, with the other end leading to the top floor of the building he initially entered.
There were no Ghosteye Witches on the bridge, allowing Angel to smoothly arrive at the other side’s terrace.
On this terrace stood yet another door.
The condition of this door was almost identical to the previous one; the material was intact, still solid, but other magic patterns had been breached.
With a gentle push, the door slowly opened.
Behind the door was a pitch-black descending staircase.
Without hesitation, Angel stepped inside. The length of this staircase exceeds the visible spatial limits, which also signifies that the fifth and sixth floors of this building are not as small as they appear from the outside. It should have undergone a spatial expansion internally.
After quickly stepping for about ten seconds, Angel reached a turn in the staircase.
At the corner was an open door, beyond which was a noticeably bright and spacious hall.
However, this was not the end of the stairway; following the corner further leads to another downward staircase.
If the spatial expansion was carried out strictly within the original floors, what lies beyond this door should be the sixth floor, with continued downward stairs leading to the fifth floor.
But if the spatial expansion was carried out without specifications, dimensionally expanded, the specific number of floors here is uncertain.
Angel personally believes the answer is likely the latter.
For a place guarded so tightly, would only two floors not be a case of using a sledgehammer to crack a nut?
Angel did not continue downward to verify the exact number of floors here, but instead chose to first enter the nearby door.
He hasn’t forgotten his purpose; the priority is finding a suitable Ghosteye Witch for Earl Mi’s Shadow Transformation Fusion. As for exploration and verification, this is not immediate.
On entering, familiar hall arrangements are revealed inside.
Similarly, the hall contains a considerable number of Ghosteye Witches; the open space combined with the significant number of Ghosteye Witches is unsuitable for Earl Mi’s task completion.
Angel softly summons "Speedy" in his mind.
Without needing Angel’s instructions, Speedy is already controlling the flowing wind, swiftly exploring the spatial scenario of this floor.
Due to fears that Wind’s Force might alarm the Ghosteye Witches, Speedy operates with the winds originally circulating here, which reduces its efficiency and accuracy in probing. Nonetheless, it is quicker than Angel’s solo exploration.
After a while, Angel receives a general floor distribution map from Speedy in his mind.
"Even larger than imagined?" Moreover... it’s tiered, with multiple descending stairways at differing heights.
There’s no need to verify the stairway below the corner; it’s virtually confirmed the space here is expanded in dimensional levels, and Angel doesn’t know exactly how many floors it comprises. Surely it’s not limited to two.
Although Speedy has scouted the general space distribution, detailed information still requires Angel to personally investigate.
The rooms on this floor are relatively large, and the central room is not the current hall but a different round hall.
All other rooms are built around the circular hall, including this current hall.
Angel’s first stop is naturally that round hall, being the best transit spot with its connectivity.
Upon entering the circular hall, seeing the scene before him, Angel’s brows slightly furrow.
Though it’s mostly ruined here, from the fragments scattered on the ground and familiar metal handles, it’s safe to conclude this round hall used to be a laboratory.
Moreover, it was a large, public laboratory.
Even bigger than the laboratory previously seen for a hundred people’s collaborative work.
What kind of research was Naraku City conducting back then? Requiring so many and such large laboratories, especially given such a concealed location for this laboratory?
From the numerous debris, Angel is unable to derive clues and can only set this curiosity aside for now.
The Ghosteye Witches are more concentrated in the circular hall, prompting Angel to cautiously evade them as he roams through different corridors and rooms.